Multiple vulnerabilities in Dell Wyse

Published: 2022-10-25

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-12351 CVE-2020-12352
CWE-ID	CWE-20 CWE-284
Exploitation vector	Local network
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	Wyse 5470 Hardware solutions / Firmware Dell Wyse 3040 Hardware solutions / Firmware Wyse 5070 Hardware solutions / Firmware
Vendor	Dell

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU47545

Risk: Medium

CVSSv3.1: 7.9 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-12351

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input within the BlueZ implementation in Linux kernel. A remote attacker on the local network can pass specially crafted input to the application and execute arbitrary code on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Wyse 5470: before 2.2 MR4

Dell Wyse 3040: before 2.2 MR4

Wyse 5070: before 2.2 MR4

External links

http://www.dell.com/support/kbdoc/en-us/000181614/dsa-2021-002

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Improper access control

EUVDB-ID: #VU47546